Check-valve.



. PATENTED MAY 12, 1908. A. EISENREIGH. CHECK VALVE APPLICATION FILED SEPT.10, 1906.

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UNITED STATES CHECK-VALVE Specification of Letters Patent.

Patented May 12, 1908.

Application filed September 10, 1906. Serial No. 333,971.

T 0 all whom it may concern:

Be it known that I, ANTON EISENREICH, a citizen of the United States, residing at Bailey, in the county of Cherry and State of Nebraska, have invented certain new and useful Improvements in Check-Valves, and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improved check valve for use in suction pipe of a lift pump, and it consists in. the construction, combination and arrangement of devices hereinafter described and claimed.

The object of my invention is to provide an improved check valve, which is located in the suction pipe of a lift pump to partly relieve the pump plunger of stress and to keep the pump primed so that it will operate as soon as it is put in motion, as hereinafter described.

In the accompanying drawings,Figure 1 is partly an elevation and artly a sectional view of a lift pump provic ed with my improved check valve; and Fig. 2 is a detail sectional view, taken on the plane indicated by the line a'-a in Fig. 1.

The pump 1 may be any suitable form of lift pump, preferably such a pump as is usu ally operated either by a windmill or by hand.

In the embodiment of my invention, I provide a water chamber 2, which is preferably of double conical form having openings at its upper and lower ends, into which the upper anc lower sections 3, 4, of the suction pipe are secured, so that the said water chamber becomes connected with and forms essentially a part of said suction pipe. In one side of the water chamber, near its lower end, is an opening 5, which is covered by a removable screw-cap 6. In the lower end of the water chamber is a valve seat 7, which supports and coacts with a check valve 8, said check valve being here shown as provided with a depending stem 9, weighted somewhat at its lower end, as at 10. The stem is preferably made tapering from the valve downward so that when the valve is lifted off its seat, it can move freely in any direction to let the water pass, and as soon as the flow of water ceases, the valve will be guided back onto its seat by the tapering sides of the chamber and also by the'taper of the stem. This construction of the chamber and valve will permit of a very large flow of water past the valve and will cause the valve to be quickly and accurately seated as soon as the flow stops. A bar 11 passes transversely through the lower portion of the water chamber at a distance above the valve seat less than the length of the valve stem, and serves to limit the upward movement of the check valve. Said bar is removably held in place by screws 12.

In the operation of my invention, the check valve opens at each upstroke of the plunger of the pump, so that water passes said check valve and enters the water chamber 2. At each downstroke of the pump plunger, the check valve closes. It also closes when the pump is not in operation, and hence it serves to retain water-in the water chamber and in the upper section 3 of the pump suction pipe, so that the pump is kept at all times primed and delivers water as soon as it is operated.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of the invention, as defined by the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by Letters-Patent, is,

1. In a pump, a water chamber having a lower conical portion, a valve in the bottom of said chamber, a closable man-hole in the side of said chamber, a bar resting across said conical portion to limit the upper movement of said valve and screws passing through the sides of said cone into the ends of said bar.

2. In a pump,'a lower conical portion, a bar resting across said lower conical portion, the diameter of said conical portion above said bar being greater than the length of said bar whereby said bar may be freely moved upwardly and whereby s ace is provided for the removal thereof, the diameter of said conical ortion below said bar being less than the ength of said bar whereby said bar is held against downward displacement and a firm seat is provided therefor, screws passing through the sides of said chamber into the ends of said bar to removably hold the same in place, a valve in the bottom of said chamber, the upward movement of said valve being limited by said bar, a man-hole in the side of said chamber and a removable closure for said man-hole.

3. In a pump, a lower conical portion, a bar resting across said lower conical portion, the diameter of said conical portion above said bar being greater than the length of said bar whereby said bar may be freely moved upwardly and whereby space is provided for the removal thereof, the diameter of said conical portion below said bar being less than the length of said bar whereby said bar is held against downward displacement and a firm seat is provided therefor, screws passing through the sides of said chamber into the ends of said bar to removably hold the same in place, a valve in the bottom of said chamber, the upward movement of said valve being limited by said bar, a man-hole in the nesses.

ANTON EISENREIOH. Witnesses:

E. M. FoLLER, JENNIE CRowE. 

